What is this?

I caught this in the Gulf of Mexico at Pensacola, Florida about a year ago and took these pics before I released it. He was just swimming along maybe six feet from the shore. I think it is related to cephalopods, but I figured you guys would know what it is even if it isn't. Personally, I am inclined to think it is a sea angel, but, hey, that is for the professionals to decide. Haha. Thanks!

~Dave~"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."-Albert Einstein
"Life is tough, It's even tougher if your stupid" -John Wayne
“I am always ready to learn although I do not always like being taught.” -Winston Churchilll

~Dave~"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."-Albert Einstein
"Life is tough, It's even tougher if your stupid" -John Wayne
“I am always ready to learn although I do not always like being taught.” -Winston Churchilll